Guests booking through Transienthome.com receive a booking confirmation that serves as official documentation of their reservation, including the property details, stay dates, total amount paid, and relevant terms. Whether an official receipt with a BIR-registered invoice is issued depends on whether the host operates as a registered business, which is more likely on Transienthome.com given that all hosts are required to submit documentary proof of their business before listing. Guests who require an official receipt for reimbursement or business purposes should request one from the host at the time of booking.